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Precipitation transformation of rare earth sulfate into chloride with p-dodecylphenoxy carboxylic acidsYanliang Wang1,Jia Su1,2,Xiangguang Guo1,Jianguo Cui3,Yan Bai4,Fujian Li1,5,Xiaoqi Sun1,51. CAS... acids and precipitation process with ammonium bicarbonate(NH4 HCO3).In this paper,alkylphenoxy carboxylic acids(HAs) ofp-dodecylphenoxy acetic acid(HA-Ⅰ),pdodecylphenoxypropanoic acid(HA-Ⅱ) and p......
precipitation in cast alloy IN625 was investigated in this paper. Although the influences of δ phase on the mechanical properties have been pointed out in our previous work, the relationship is still... with increasing δ phase fraction, while the elongation was relatively and limitedly affected by δ precipitation when the area fraction of δ phase was above 10%.关键词:......
合金；时效；析出强化；粗化Aging and precipitation evolution of Al-Er-Zr alloysLI Yan, WEN Sheng-ping, GAO Kun-yuan, HUANG Hui, NIE Zuo-ren(School of Material Science and Engineering, Beijing University...-Er-Zr, the hardness has a second peak as synergetic precipitation of Er and Zr; the second is 53.5HV, which is significantly higher than the peak hardness of Al-Er binary alloy. The Al3(Er1-xZrx......
; 文献标识码:A 文章编号:1672-7207(2008)01-0007-05 Preparation of Fe-coated Si3N4 composite powder by heterogeneous precipitation... composite powder was synthesized by the heterogeneous precipitation-thermal reduction process. SEM of Fe/Si3N4 composite powder and Si3N4 without conductive coating were compared, and the structures......
Precipitation behavior of γ′ phase in superalloy FGH96 under interrupted cooling testHeng-San Liu1,Lin Zhang1,Xin-Bo He1,Xuan-Hui Qu1,Zhou Li2,Guo-Qing Zhang21. Beijing Key Laboratory for Powder... id="ChDivSummary" name="ChDivSummary">The precipitation behavior of γ′ phase,under various interrupt cooling tests after 1170℃,solution treatment was examined.The results indicate that the size......
Effect of Sulfate Ions on YAG Powders Synthesized by Microwave Homogeneous Precipitation王介强,徐红燕,王勇,岳云龙摘 要:<正>Using A1(NO3)3·9H2O, NH4Al(SO4)2·12H2O, Y(NO3)3as mother salts, and urea as precipitant, YAG nano-powders were synthesized by microwave homogeneous precipitation. The composition, morphology, and phase transformation of precursor were......
EXPERIMENTAL INVESTIGATION AND THERMODYNAMIC CALCULATION ON PHASE PRECIPITATION OF INCONEL 740 J.X. Dong1,S.Q. Zhao2,X.S. Xie1,Y. Jiang3 (1.High Temperature Materials Research Laboratories... Institute, Yinchuan 750021, China) Abstract:A novel nickel-based superalloy INCONEL 740 was under development for application in ultra-supercritical superheater tubers above 750℃. The precipitation......
Behavior of leaching and precipitation of weathering crust ion-absorbed type by magnetic field FANG Yanxi1,QIU Tingsheng1,CUI Lifeng1,FANG Xihui1 (1.Jiangxi University of Science and Technology... percolation leaching and leaching solution precipitation process research were carried out under conditions of magnetic field. The effect on the rare earth leaching process such as magnetic field strength......
Trans. Nonferrous Met. Soc. China 25(2015) 544-551 Phase-field study on competition precipitation process of Ni-Al-V alloy Yan-li LU, Guang-ming LU, De-wei JIA, Zheng CHEN State Key Laboratory... computer simulation program for the precipitation sequence and microstructure evolution of the ordered intermetallic compound γ′ and θ in ternary Ni75AlxV25-x alloy were studied. The simulation results......
compounds in grain boundary area. During the secondary creep period, the minimum creep rate of solution-treated specimens is substantially decreased as a result of dynamic MgZn2 precipitation. Key words: Mg alloy; microstructure; creep deformation; Mg-Zn phase; dynamic precipitation ......
